My high-end LED flashlights all have a strobe mode, and there's such a flashlight in our two main kits (and one in my pocket, and one in my laptop bag, and so on). I also have a pair of dedicated military-style strobes in our main kits. I wouldn't necessarily buy one but since I already had them I put them in.

What's nice about having dedicated strobes is that you can put them where they can be seen and let them run, without losing your ability to see and move around in the dark.